472 (tENEKAL diseases. 



over the whole surface may be seen small hsemorrhagic points. 

 On section, the capsule immediately retracts and the substance is 

 seen to be very dark in colour, owing to the venous engorgement. 

 McFadyean points out that " the most constant of the lesions 

 present in animals dead of horse-sickness is an intense congestion 

 of the mucous membrane of the right half of the stomach.'' 

 Lieutenant Coley, A.V.D., who had four seasons' experience of 

 this disease, states, in the " Veterinary Record," that this con- 

 gestion is seen only in a few cases. 



THE DISEASES WITH WHICH HORSE-SICKNESS MIGHT 

 BE CONFUSED are restricted as a rule to anthrax (p. 458), con- 

 gestion of the lungs (p. 363), and inflammation of the lungs 

 (p. 351). 



TREATMENT has proved up to the present to be of little or no 

 avail, with the exception of that by Lieutenant Coley, who gives 

 intravenous injections (p. 648) of — > 



Iodine ... 4 grains. 



Iodide of potassium ... ... ... 15 „ 



Glycerine 1 drachm. 



Boiled Water ... ... ... ... 1 ,, 



Out of 31 horses suilering from this disease, he had 17 recoveries. 



PREVENTIVE MEASURES.— It is seen from the foregoing 

 remarks on this disease, that if horses- be at grass during a sickly 

 period, they should be sent to some dry and unaffected grazing 

 ground beyond the limits of the disease, or be kept in a kraal at 

 night, and not allowed to graze until the sim has removed all the 

 dew from the grass. Stabled horses should be fed on dry food, 

 such as oaten hay, and Indian corn or oats, and on no account be 

 given any grass which has not been thoroughly dried. 



ACQUIRED IMMUNITY.— Dr. Edington has performed admir- 

 able work in obtaining a serum which, by inoculation, confers 

 immunity from horse-sickness. The practical application of this 

 protective agent is a question which has not yet been settled. 



It is a common belief in South Africa that horses which have 

 recove.'-ed from an attack of horse-sickness possess a life-long 

 immunity from it, and that consequently their value becomes 

 much enhanced in frequently infected districts. While in South 

 Africa I was unable to obtain ajiy exact information on the subject 

 of these " salted " a,nimals, which P had imagined were an ordinary 

 article of commerce in that country. In fact, many enquiries 



